duoBooks vs LingQ & Readlang

duoBooks, LingQ, and Readlang all share the same good idea: you learn a language by reading and tapping words to look them up, then saving them to study later. They are all worth a look. duoBooks stands out as a native phone, tablet, and e-ink reading app with context-aware translation and a built-in library. Here is an honest comparison.

duoBooks vs LingQ vs Readlang at a glance

 duoBooksLingQReadlang
PlatformNative iPhone, iPad & Android app, plus automatic e-ink modeWeb and mobile appsMainly web, with a browser extension
Read & translateTap a word or sentence; context-aware translation (idioms, phrasal verbs)Click words to look up and saveClick words for translation
Content3000+ built-in library, plus import EPUB & FB2Import your own content, plus a community libraryImport your own texts and web pages
VocabularySaved words become spaced-repetition flashcardsSaved words (LingQs) with reviewSaved words become flashcards
AudioText-to-speech for any word or sentence, 47 languagesAudio for many lessonsBrowser-based text-to-speech
E-ink readersAutomatic e-ink mode on Android e-readersPrimarily phone, tablet & webPrimarily web

Feature summaries are general and may change — check each product’s own site for current details.

What LingQ and Readlang do well

Both are well-loved by readers learning a language. LingQ has a large library of lessons with audio and a strong community, and it tracks the words you know across everything you read. Readlang makes it easy to read any web page or text in your browser, click words for a quick translation, and turn them into flashcards. If you mostly read on a computer, or you want LingQ’s known-words tracking and community content, they are excellent choices. duoBooks takes a slightly different shape.

What duoBooks does differently

duoBooks is built first as a polished reading app for your phone, tablet, and e-ink reader. Three things set it apart. First, the translation is context-aware: tap a word and it reads the sentence around it, so the meaning fits and idioms and phrasal verbs come out right; tap a whole sentence and it keeps the tone and resolves the pronouns. Second, it comes with a built-in library of more than 3000 books and short stories, including stories for beginners, and it reads your own EPUB and FB2 files too. Third, on Android-based e-ink readers like BOOX and PocketBook, duoBooks turns on a high-contrast e-ink mode by itself — so you can learn a language on the calm screen many readers prefer. Saved words become spaced-repetition flashcards, and you can hear anything read aloud in 47 languages.

Which should you use?

If you read mostly on a desktop browser, or you want LingQ’s known-words tracking and community library, those tools are a great fit. If you want a polished reading app for your phone, tablet, or e-ink reader — with context-aware translation and a library you can start tonight — try duoBooks. See duoBooks on e-ink readers, or learn what duoBooks is.

Frequently asked questions

Both let you read and tap words to look them up and save them. duoBooks focuses on context-aware translation — it sends the sentence around the word you tap, so the meaning fits and idioms and phrasal verbs work — and it is a native iPhone, iPad, and Android app with an automatic e-ink mode for Android e-readers. It also comes with a 3000+ library and reads EPUB and FB2 files.

Readlang is mainly a web reader where you click words to translate and build flashcards. duoBooks is a native mobile and e-ink reading app. You tap words or sentences for context-aware translation, save them as spaced-repetition flashcards, and listen with text-to-speech in 47 languages.

Yes. duoBooks reads EPUB and FB2 files you import, alongside its built-in library of 3000+ books and short stories. You read imported books with the same one-tap, context-aware translation.

duoBooks is free to download and includes the full library. There is an optional Full Access subscription, with a free trial, that unlocks unlimited translations and audio.

Try reading with duoBooks

duoBooks is free to download. Open a book, tap the words you do not know, and learn the language as you read — on your phone, tablet, or e-ink reader.